3D Glyph Visualization

Description

The ODF profiles reconstructed at each voxel by GQI are visualized as 3D glyphs using rgl. The estimated fibre orientations per voxel are also depicted.

Usage

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plotglyph(odf, grad, pk, kdir=6, vmfglyph=TRUE, pos=c(0,0,0))

Arguments

odf

slice ODFs.

grad

ODF vertices generated by the selected shell tessellation.

pk

coordinates of voxel main directions.

kdir

maximum number of directions to use (default: 6).

vmfglyph

logical variable for glyph visualization in two situations: statistical vMF glyphs (default: TRUE), and deterministic glyphs.

pos

3D positional coordinate (default c(0,0,0)).

Details

plotglyph is used by gqi.odfvxgrid, gqi.odfpeaklines, and gqi.odfvmflines.

Author(s)

Adelino Ferreira da Silva, Universidade Nova de Lisboa, Faculdade de Ciencias e Tecnologia, Portugal, afs at fct.unl.pt

References

Ferreira da Silva, A. R. Facing the Challenge of Estimating Human Brain White Matter Pathways. In Proc. of the 4th International Joint Conference on Computational Intelligence (Oct. 2012), K. Madani, J. Kacprzyk, and J. Filipe, Eds., SciTePress, pp. 709-714.

Adler, D., and Murdoch, D. rgl: 3D visualization device system (OpenGL), 2012. R package version 0.92.880.

Auguie, B. gridExtra: functions in Grid graphics, 2012. R package version 0.9.1.

Barber, C. B., Habel, K., Grasman, R., Gramacy, R. B., Stahel, A., and Sterratt, D. C. geometry: Mesh generation and surface tesselation, 2012. R package version 0.3-2.

See Also

simulglyph.vmf, simulglyph.vmf, gqi.odfpeaks, gqi.odfvmf, gqi.odfvmflines, gqi.odfvxgrid, s2tessel.zorder, plotglyph, rgbvolmap

Examples

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## Not run: 
    gqi.odfvmflines(showglyph=TRUE, thr=0.7)
    ## noise-free simulations and vMF estimation (2 directions)
    simulglyph.vmf(angles=c(20,110),b=1500)

## End(Not run)

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